In the News...
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All Challenged and New Claims of HPL's 8,134,450 Patent are Confirmed in Reexamination 95/002,016
Apr 17, 2017 -
Original and New Claims of HPL's 7,155,241 Patent are Confirmed in Reexamination 95/001,864
Mar 10, 2017 -
USPTO Issues Helferich Patent No. 9,560,502
Jan 31, 2017 -
PTAB Reversed all Claim Rejections in the 95/001,984 Reexamination of HPL's 7,835,757 Patent
Dec 29, 2016 -
USPTO Issues Helferich Patent No. 9,167,401
Oct 20, 2015 -
USPTO Issues Helferich Patent No. 9,071,953
Jun 30, 2015 -
Federal Circuit Rules In Favor of HPL, Reversing Lower Court's Exhaustion Decision
Feb 10, 2015 -
USPTO Issues Helferich Patent No. 8,560,006
Oct 16, 2013 -
HPL to Appeal Exhaustion Order
Aug 29, 2013 -
USPTO Issues Helferich Patent No. 8,498,387
Jul 31, 2013